What are the elements that have contributed the most to the development of the field of trade as well as its intensification currently?

What are the elements that have contributed the most to the development of the field of trade as well as its intensification currently?
Acquiring foreign commodities has never been so easily available. In fact, even though we may be unaware of it, we are provided with a chance to get only products made by producers from abroad, beginning from food and ending on clothes. It is connected with the fact that we live in such times, where the rivalry on different markets has become almost global.

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